3618 Commits

Include renames

Author	SHA1	Message	Date
Linus Torvalds	27a59c0251	Merge tag 'mips_7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux ... Pull MIPS updates from Thomas Bogendoerfer: - switch gpio code to use swnodes - rework of TXX9 gpio code - enable multi-vpe for econet - cleanups and fixes * tag 'mips_7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: mips: dts: econet: Describe dual-VPE 34Kc processor mips: econet: add multi-vpe capability to EN751221 MIPS: ptrace: Fix syscall skipping via PTRACE_SYSCALL mips: remove dead select MIPS: BCM47XX: Convert buttons to software nodes ssb: gpio: Add and register software node for GPIO controller bcma: gpio: Add and register software node for GPIO controller MIPS: ip22-gio: Drop #include of <linux/mod_devicetable.h> MIPS: TXX9: Clean up txx9_iocled_init() MIPS: TXX9: Convert gpio_txx9 to dynamic GPIO base allocation MIPS: TXX9: Drop GPIOLIB_LEGACY select MIPS: TXX9: Use GPIO lookup table for iocled LEDs MIPS: TXX9: Reduce TXX9_IOCLED_MAXLEDS to 3 MIPS: TXX9: rbtx4927: Use GPIO lookup table for TXx9 LEDs MIPS: TXX9: rbtx4927: Use GPIO lookup table for SIO DTR MIPS: TXX9: Remove txx9_7segled_*() forward declarations MIPS: TXX9: Remove tx4938_spi_init() and txx9_spi_init() MIPS: kernel: proc: Use two seq_putc() calls in show_cpuinfo()	2026-08-21 12:39:49 -07:00
Linus Torvalds	ed3b875bea	Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ... Pull MM updates from Andrew Morton: - "mm: drop "sub" prefix from various places" (Dev Jain) page->folio conversion and a naming cleanup - "mm/kasan: remove redundant initialization for kasan_flag_write_only" (Igor Putko) KASAN cleanup work - "mm/filemap: reduce unnecessary xarray lookups" (Chi Zhiling) Small speedup in the pagecaache read code - "mm/percpu: Fix possible NOFS/NOIO reclaim recursion" (Kaitao Cheng) Improve the vmalloc code - mainly the avoidance of GFP_KERNEL allocations when the caller asked for GFP_NOFS or GFP_NOIO - "mm/kmemleak: avoid soft lockup when scanning task stacks" (Breno Leitao) Avoid a soft lockup watchdog trigger from the kmemleak scanning code in extreme situations - "mm/page_owner: misc cleanups" (Ye Liu) Cleanups to the page_owner code. For some reason lots of people have been working on the page_owner code this cycle. - "mm: convert to walk_page_range_vma() to eliminate find_vma()" (Kefeng Wang) Simplify and accelerate the page walking library function - "mm/migrate: preparatory cleanups for batch copy and offload" (Shivank Garg) Cleanups in the migration code - "mm/page_owner: add per-fd filter infrastructure for print_mode and NUMA filtering" (Zhen Ni) Per-fd filtering to page_owner in order to reduce the sometimes vast amount of output it can produce - "mm: Refactor bootmem gigantic hugepage allocation" (Muchun Song) Fixes and preparatory cleanups around bootmem HugeTLB handling, sparse initialization ordering, and related vmemmap setup - "mm/zsmalloc: reduce lock contention in zs_free()" (Wenchao Hao) Reduce lock contention in zs_free(), which dominates the unmap path under memory pressure on Android (LMK kills) and on x86 servers running zswap-heavy workloads. Up to 1.83x improvement in microbenchmarking. - "move alloc_tag.c file under mm/" (Suren Baghdasaryan) - "samples/damon: handle damon_{start,stop}() failures" (SJ Park) Fix improper handling of damon_start(), damon_stop(), and damon_call() failures across DAMON sample modules to prevent potential memory leaks, operation disruptions and use-after-free bugs - "mm/damon/sysfs: kobject_del() directories that users can create/remove" (SJ Park) Fix delayed sysfs directory removal under DEBUG_KOBJECT_RELEASE causeing creation failures due to duplicate directory names by adding missing kobject_del() calls before creating new directories - "mm: cleanup clear_not_present_full_ptes()" (David Hildenbrand) Clean up the core pte handling code - "selftests/damon: misc fixes for test bugs" (Kunwu Chan) Fix several bugs in the DAMON selftests - "selftests/damon: fix memcg_path staging handling" (Cheng Nie) Fix a bug in _damon_sysfs.py for damos_filter memcg_path setup, and add a test case for it in sysfs.py. - "selftests/damon: test kdamond refresh_ms" (Ruslan Valiyev) Selftest coverage for DAMON's refresh_ms sysfs feature by updating the test control module and verifying that scheme stats update automatically without manual intervention - "mm/damon: five misc fixups" (Akinobu Mita) Miscellaneous DAMON fixups. - "mm/damon/core: detect internal variation above max_nr_regions/2" (Jiayuan Chen) Fix DAMON's region splitting behavior when region counts exceed half the maximum budget by dynamically scaling down the split fraction as the limit approaches, preventing large regions from staying un-split, and add corresponding KUnit test coverage - "mm: preparatory patches for PMD level swap entries" (Usama Arif) Refactor and clean up PMD softleaf helpers, call sites, and architecture flags to lay the groundwork for a follow-up series that introduces PMD page table swap entries - "mm/damon: update, optimize, and clean up doc, tests, and code" (SJ Park) Update DAMON design and ABI documentation, expands unit and selftest coverage, optimize damon_commit_target_regions(), and clean up recently added sysfs interface code for better readability - "mm/vmpressure: reduce CPU, memory and code overhead on cgroup v2" (Usama Arif) Optimize vmpressure() by skipping unnecessary work on cgroup v2 for userspace event notifications and refactor v1-only eventfd handling into mm/memcontrol-v1.c to reduce memory overhead and code complexity - "selftests/mm: refactor pkey helpers and fix mmap error handling" (Hongfu Li) Refactor pkeys shared tracing and assertion helpers into a common file, unify protection key selftests to use consistent diagnostic logging and assertions, and enforce standardized MAP_FAILED return checks for mmap() calls across the tests - "mm/damon: optimize out nr_accesses_bp" (SJ Park) Replace the error-prone, continuously updated nr_accesses_bp field in damon_region with an on-demand moving sum function, reducing structure memory overhead and avoiding state corruption bugs - "Open HugeTLB allocation routine for more generic use" (Ackerley Tng) Decouple HugeTLB folio allocation from VMA dependencies by introducing hugetlb_alloc_folio(), enabling subsystems like guest_memfd to allocate HugeTLB folios without standard VMA reservations or pseudo-VMAs - "mm/damon: provide pseudo moving sum probe_hits" (SJ Park) Integrate DAMON's probe_hits attribute counter into the pseudo moving sum infrastructure, enabling real-time, online monitoring without waiting for full aggregation intervals - "mm: Some cleanups for page allocator APIs" (Brendan Jackman) Simplify and refactor the page allocator entry points and flags by unifying allocation paths, adding internal alloc_flags arguments, and eliminating redundant __ prefixed alloc_pages variants. - "Fix incorrect access of hugetlb pte entries" (Dev Jain) Enforce the consistent use of huge_ptep_get() instead of ptep_get() for HugeTLB entries and fixes an unaligned address issue in arm64's huge_ptep_get() implementation - "mm/damon: validate all parameters in the core" (SJ Park) Consolidate parameter validation into the DAMON core specifically within damon_start() and damon_commit_ctx() to centralize error checking, eliminate caller-side redundant checks and to improve maintenance efficiency - "tools/mm/page_owner_sort: fix filtering and cleanup issues" (Yichong Chen) Rename is_need() to filter_record() for clearer return semantics, fix per-record allocation memory leaks and bound output copies in search_pattern() to address an existing buffer issue - "memcg: bail out reclaim when memcg is dying" (Jiayuan Chen) Mitigate a system-wide stall which occurs when a cgroup is removed while one of its memory control files is doing synchronous reclaim - "mm/memory-failure: add panic option for unrecoverable pages" (Breno Leitao) Introduce an opt-in vm.panic_on_unrecoverable_memory_failure sysctl that immediately panics the kernel on unrecoverable memory errors in kernel-owned pages to preserve error context and prevent delayed, silent data corruption - "mm/damon: refactor damon_{start,stop,commit}() for simple error handling" (SJ Park) Refactor the DAMON core API functions to guarantee that all contexts are fully stopped when damon_start(), damon_stop(), or damon_commit() fail, eliminating the need for complex and error-prone caller-side cleanup code - "Keep tail page private zero at free and folio split" (Zi Yan) Add checks to ensure tail_page->private is zero when freeing compound or high-order pages and when promoting tail pages during large folio splits. By validating these fields at free and split time, it allows the removal of redundant private field clearing inside prep_compound_tail() - "mm: drop redundant lru_add_drain in anon folio reuse paths" (Barry Song) Eliminate redundant lru_add_drain() calls in wp_can_reuse_anon_folio() and do_swap_page() to reduce LRU lock contention and system overhead By validating folio refcounts against the LRU cache before draining and removing unnecessary drains in the swap path, it achieves up to a 30.5% reduction in drain calls during heavy swap workloads - "mm: clean up folio LRU and swap declarations" (Jianyue Wu) Reorganize folio LRU and swap code by relocating page-cluster state to mm/swap_state.c, renaming mm/swap.c to mm/folio.c, and moving MM-internal reclaim declarations into mm/internal.h. - "userfaultfd: working set tracking for VM guest memory" (Kiryl Shutsemau) Add userfaultfd support for tracking the working set of VM guest memory, so a VMM can identify hot pages and reclaim cold ones to tiered or remote storage - "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 2)" (David Hildenbrand) Remove the remaining pieces of CONFIG_HAVE_BOOTMEM_INFO_NODE, performing some smaller cleanups around freeing of reserved vmemmap pages on the way. - "mm/damon: update probe hits for runtime parameter commits" (SJ Park) Ensure that DAMON's probe_hits attribute counter is properly updated when monitoring intervals are changed at runtime, matching the behavior of nr_accesses. To achieve this, it refactors and renames existing helper functions for shared use, applies the updates to probe_hits, and handles edge cases in damon_probe_hits_mvsum() to maintain measurement accuracy. - "KSM: performance optimizations for rmap_walk_ksm" (xu xin) Resolve a severe KSM reverse-mapping performance bottleneck where thousands of split VMAs sharing a single anon_vma cause extended lock contention. By adding an interval-filtering check during the rmap walk, it reduces worst-case anon_vma lock hold times from over 500ms down to under 2ms, preventing application freezes and latency spikes under memory pressure. - "mm: split a couple of headers from internal.h" (Mike Rapoport) Split declarations related to mm_init, memblock, vmalloc and sparse into new headers - "KSM: use linear_page_index in collect_procs_ksm()" (xu xin) Apply the interval tree optimization from rmap_walk_ksm() to collect_procs_ksm() to avoid iterating over non-matching VMAs during KSM memory error handling. It hoists loop-invariant address initialization and restricts the anon_vma_interval_tree_foreach walk to a targeted page offset range, reducing redundant checks and improving lookup efficiency. - "selftests/mm: avoid false failures in hugetlb and KSM tests" (Sayali Patil) Fix issues in the hugetlb and KSM MM selftest categories that can report failures when the prerequisites for the tests are not satisfied - "mm/damon: introduce data attributes only monitoring" (SJ Park) Introduce attribute-weighted region management in DAMON, allowing users to prioritize specific data attributes (such as page sizes or cgroups) over or instead of access monitoring. By assigning weights to attribute probes, DAMON can completely disable access tracking and adjust monitoring regions based on weighted probe-hit counters to optimize monitoring quality for attribute-focused workloads. - "mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings" (Stanislav Kinsburskii) Extend hmm_range_fault() to support userfaultfd-backed regions by allowing the mmap lock to be dropped during fault handling via a new hmm_range_fault_locked() helper. By accepting a locked pointer and signaling retry status when lock release occurs, it enables page fault resolution in userfaultfd regions while preserving backward compatibility for existing callers. - "mm: make VMA page offset handling more consistent" (Lorenzo Stoakes) Clean up and standardize how vma->vm_pgoff is accessed and manipulated across file-backed and anonymous mappings in the kernel It introduces dedicated helper functions such as vma_start_pgoff(), vma_end_pgoff(), vma_set_pgoff() and linear_page_delta() while renaming rmap interval tree helpers to better reflect their functionality. These changes establish a cleaner foundation for future work that will unify virtual page offset indexing for all anonymous and CoW'd folios. - "mm: handle device-private PMDs in walk callbacks" (Usama Arif) Address kernel panics and state corruption caused by MM walk callbacks reaching non-present device-private PMD swap entries created during HMM migrations It ensures that functions which acquire pmd_trans_huge_lock() properly recognize device-private PMDs instead of assuming a present THP or a standard migration entry. - "mm/rmap: Refactor try_to_unmap_one" (Dev Jain) Refactor try_to_unmap_one by modularizing Hugetlb, anonymous-lazyfree, and anonymous-swapbacked logic into dedicated functions, laying the structural groundwork for batched anonymous large folio unmapping. - "Docs/ABI/damon: sysfs ABI document fixes and additions" (Song Hu) Fix typos and fills in missing entries in the DAMON sysfs ABI document - "dax/kmem: atomic whole-device hotplug via sysfs" (Gregory Price) Introduce an atomic sysfs state attribute and supporting DAX/MM infrastructure to prevent userland races when offlining and removing entire memory regions By adding an unplugged state alongside standard online modes, it enables whole-device atomic hotplug control while preserving backward compatibility. - "mm: convert more vm_flags_t users to vma_flags_t" (Lorenzo Stoakes) Continue transitioning the kernel from the deprecated vm_flags_t type to vma_flags_t across core memory management infrastructure. It replaces legacy type usage in core functions such as do_mmap(), unmapped area allocation, mm->def_vma_flags, and VMA operations like mlock, mprotect, and mremap. - "Two small patches to clean up mm/mm_slot.h" (xu xin) Refactor mm_slot.h by introducing mm_slot_remove() to unify duplicate slot deletion sequences in khugepaged and KSM. It also adds code documentation explaining why mm_slot_lookup and mm_slot_insert must remain as preprocessor macros rather than static inline functions. - "mm/damon/core: hide core-private struct fields" (SJ Park) Clean up DAMON core structures by consistently marking internal-only fields with private: comment tags to prevent improper direct access from outer layers. It enforces encapsulation across core structures including damon_region, damon_target, and damon_ctx and updates DAMON_SYSFS to interact through approved access APIs instead of exposing raw struct members. - "mm/damon: unurgent fixes for infinite loop, NULL de-ref and races" (SJ Park) Address potential infinite loops, NULL dereferences, and race conditions identified in DAMON It fixes an infinite loop triggered by extreme user configurations, a NULL pointer dereference within unit tests and minor monitoring accuracy degradation caused by subtle runtime races. - "mm/page_alloc: fixes for free_pages_nolock() on RT/UP" (Brendan Jackman) Fix an NMI safety flaw in __free_frozen_pages() where freeing pages on non-SMP or PREEMPT_RT kernels can bypass can_spin_trylock() checks via non-PCP or isolated migration paths. It also resolves potential kernel crashes and privilege escalation risks triggered when BPF tracing runs in NMI context alongside memory hotplug or large allocation frees. - "mm/page_alloc: couple of followups for recent cleanups" (Brendan Jackman) Clean up and update page allocator nomenclature, documentation, and debug assertions. It aligns internal FPI_ flags with the public "nolock" naming convention, removes outdated internal implementation details from high-level page allocator comments, and eliminates obsolete VM_BUG_ON() assertions in allocation paths. - "mm/mseal: further cleanups" (Lorenzo Stoakes) Refactor and simplify the mseal implementation by clarifying API boundaries and removing unnecessary code complexity. It replaces generic do_mseal() usage outside the syscall with a dedicated mseal_mmap_page_zero() helper for MMAP_PAGE_ZERO, eliminates mm_struct parameters to enforce that sealing applies only to current->mm, and streamlines overall logic and comments with no functional changes intended. - "mm/vmscan: fix swappiness=max and clean up per-node proactive reclaim" (Ridong Chen) Resolve reclaim behavior bugs and clean up function parameters across memory reclaim paths It fixes swappiness=max in both standard reclaim and MGLRU so unswappable anonymous memory no longer falls back to evicting page cache, ensures reclaim_store() returns accurate error codes instead of collapsing all failures into -EAGAIN, and removes the obsolete gfp_mask parameter from __node_reclaim(). - "mm: mincore: misc cleanups" (Kefeng Wang) Clean up and simplifies the mincore code. Most importantly, it removes the historical special behavior that always reports VM_PFNMAP pages as non-resident. - "mm/huge_memory: drop dead split helper variants" (Kiryl Shutsemau) Two trivial cleanups in the folio split API - "mm/damon: fix uninitialized DAMOS field and kunit exec expectation bugs" (SJ Park) Resolve minor operational and testing bugs in DAMON identified by Sashiko. It initializes the damos->last_applied field to prevent occasional efficiency degradation and fixes invalid memory accesses in DAMON KUnit tests during test failure handling. - "cleanup for stable_page_flags()" (Jinjiang Tu) Clean up and refactor stable_page_flags() used by /proc/kpageflags without altering functionality. It uses BIT_ULL() to prevent shift-overflow warnings on 64-bit flag bits, converts folio-specific flag checks to standard folio_test_*() helpers, and removes redundant CONFIG_PAGE_IDLE_FLAG handling. - "Batch unmap of uffd-wp file folios" (Dev Jain) Extend batched folio unmapping support to file folios within userfaultfd write-protect (uffd-wp) VMAs by adding batching capabilities to pte_install_uffd_wp_if_needed(). This removes special-case restrictions on uffd-wp VMAs in try_to_unmap_one(), significantly simplifying the function's control flow and complexity. - "mm/early_ioremap: clarify and clean up early_ioremap_reset()" (Sang-Heon Jeon) Clarify and clean up the architecture-specific usage of __late_set_fixmap() and __late_clear_fixmap() after early_ioremap_reset() It adds explicit documentation regarding when early_ioremap_reset() must be called and removes redundant macro definitions and reset calls in the RISC-V and ARM64 architectures. - "mm: fix reclaim storms in defrag_mode" (Johannes Weiner) Address severe performance regressions, swap storms, and spurious OOMs caused by vm.defrag_mode=1 under high memory pressure in Meta production It updates the page allocator slowpath so non-movable allocation requests actively trigger direct reclaim and direct compaction at pageblock_order scale, allowing them to claim whole pageblocks rather than spinning unproductively. - "zram: lockmap tweaks" (Sebastian Siewior) Optimize and fix lockdep tracking for zram devices by consolidating per-entry lockmaps and isolate lock classes across multiple instances This reduces memory overhead by replacing per-entry lockdep_map instances with a single map per struct zram, and assigns a dynamic lock_class_key to each instance to prevent false deadlock reports when different zram devices are backed by distinct filesystems. * tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (501 commits) selftests/mm: thuge-gen: fix test_shmget() for PAGE_SIZE check selftests/mm: unpoison pages in memory-failure teardown mm/shmem: downgrade final i_blocks check in shmem_evict_inode() to pr_warn() mm/khugepaged: replace mutex_lock/mutex_unlock usage with guard macro mm/zsmalloc: fix release order of locks in zs_page_migrate() Documentation: zram: remove sections numbering ksm: stop iterating VMAs when ksm_test_exit returns true mm: fold userfaultfd_rwp() to false without CONFIG_ARCH_HAS_PTE_PROTNONE mm/migrate: report RCU-tasks quiescent states in migrate_pages_batch() zram: use a custom key for each zram object zram: move lockmap to be per-zram instead per table selftests/mm: fix gup_longterm EINVAL error message mm: page_alloc: fix non-movable reclaim storm in defrag_mode mm: page_alloc: move capture_control to the page allocator mm: compaction: support non-movable compaction for pageblock requests mm: page_alloc: __GFP_FS lockdep annotation for direct compaction hugetlb: evaluate subpool free state while locked mm/damon: remove trailing semicolons after function definitions mm/damon/ops-common: prevent migration fallback to non-target nodes mm/damon: update outdated comment about DAMOS filter handling ...	2026-08-20 18:17:08 -07:00
Linus Torvalds	104a813376	Merge tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Pull VDSO updates from Thomas Gleixner: - Consolidate the VDSO datastore further and provide support for mlock_all() and prefaulting. - Provide 32-bit legacy time related functionality only if CONFIG_COMPAT_32BIT_TIME is enabled. The config switch exists, but architecture code still exposes the legacy functionality even disabled. Clean this up by adding the missing guards and validating at build time that the VDSO is legacy free if disabled. - Consolidate the VDSO related config options in core and drivers, which removes some non-sensical dependencies and quite an amount of #ifdeffery. - Clean up the PAGE_SIZE definition maze * tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) random: vDSO: Drop custom PAGE_SIZE definitions LoongArch: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/timer-riscv: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/arm_arch_timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/mips-gic-timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery MIPS: csrc-r4k: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery vDSO: Make clockmode constants available without CONFIG_GENERIC_GETTIMEOFDAY kbuild: Support generated asm-headers in subdirectories vdso: Rename HAVE_GENERIC_VDSO to VDSO_DATASTORE vdso: Drop HAVE_GENERIC_VDSO from architecture kconfig files vdso: Automatically select HAVE_GENERIC_VDSO if necessary MIPS: vdso: Stop using CONFIG_HAVE_GENERIC_VDSO vdso: Remove the dependency on HAVE_GENERIC_VDSO from ARCH_HAS_VDSO_ARCH_DATA futex: Remove dependency on HAVE_GENERIC_VDSO from FUTEX_ROBUST_UNLOCK vdso/gettimeofday: Verify COMPAT_32BIT_TIME interactions sparc: vdso: Respect COMPAT_32BIT_TIME MIPS: VDSO: Respect COMPAT_32BIT_TIME powerpc/vdso: Respect COMPAT_32BIT_TIME ARM: VDSO: Respect COMPAT_32BIT_TIME arm64: vdso32: Respect COMPAT_32BIT_TIME ...	2026-08-18 16:56:25 -07:00
Linus Torvalds	3424d8c18a	Merge tag 'core-entry-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Pull generic entry code updates from Thomas Gleixner: - Make syscall user dispatching configurable Not all architectures can makes use of syscall user dispatching. Allow them to disable the feature completely. - Consolidate stack randomization for the generic entry code and the architectures using it. Stack randomization on syscall entry was sprinkled throughout the architecture specific low level entry code and in some cases at the wrong points, e.g. before establishing state, which violates the non-instrumentable constraints of that code. Clean this up by integrating stack randomization into the generic entry code helpers so that it is invoked at the earliest possible point right after establishing state and converting all generic entry code using architecture over. - Clean up the syscall number handling in the generic entry code. It works correctly for architectures which have a separate return value storage in pt_regs, but fails to distinguish the case where user space handed in -1 as syscall number from the case where the entry code rejects it by returning -1 to the callers. Aside of that the return value functionality of those interfaces is not really intuitive. Fix this by separating the decision to reject a syscall (user dispatch, ptrace, seccomp ...) from the potential modification of the syscall number through these mechanisms. This solves most of the problems for architectures which do not have a separate return value storage in pt_regs except for the case where a tracepoint has a BPF script or a probe attached which overwrite both the syscall number and the return value. But that's a problem which cannot be solved in the generic code, that only can be addressed by separating the storage model in the affected architectures. * tag 'core-entry-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) entry, treewide: Make syscall_enter_from_user_mode[_work]() indicate syscall execution entry: Make return type of syscall_trace_enter() bool entry: Rework trace_syscall_enter() entry: Rework syscall_audit_enter() syscall_user_dispatch: Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCH entry: Fix seccomp bypass after ptrace with TSYNC x86/entry: Simplify the syscall number logic x86/entry: Get rid of the sys_ni_syscall() indirection x86/entry: Make syscall functions static ptrace, treewide: Rename ptrace_report_syscall_entry() to ptrace_report_syscall_permit_entry() seccomp, treewide: Rename and convert __secure_computing() to return boolean entry: Use syscall number instead of rereading it entry: Remove syscall_enter_from_user_mode() x86/syscall: Use [syscall_]enter_from_user_mode_randomize_stack() s390/syscall: Use enter_from_user_mode_randomize_stack() riscv/syscall: Use syscall_enter_from_user_mode_randomize_stack() powerpc/syscall: Use syscall_enter_from_user_mode_randomize_stack() loongarch/syscall: Use syscall_enter_from_user_mode_randomize_stack() entry: Provide [syscall_]enter_from_user_mode_randomize_stack() randomize_kstack: Provide add_random_kstack_offset_irqsoff() ...	2026-08-18 15:00:56 -07:00
Thomas Weißschuh	b86aefb11c	MIPS: csrc-r4k: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery ... Now that there is a definition of VDSO_CLOCKMODE_R4K even if no vDSO is built, the ugly ifdeffery can be removed. Signed-off-by: Thomas Weißschuh <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Link: https://patch.msgid.link/[email protected]	2026-08-10 16:25:21 +02:00
Lorenzo Stoakes	1944a0183c	mm/vma: update do_mmap() to use vma_flags_t ... The core do_mmap() function accepts a vm_flags_t parameter which it then manipulates before passing to mmap_region() to do the heavy lifting of the memory mapping. Update do_mmap() to instead accept a vma_flags_t parameter, and adjust all the logic within do_mmap() to manipulate this instead. This is as part of the ongoing effort to convert VMA flags from a system word size to a bitmap type which allows us to unrestrict the number of VMA flags, as well as gain control over how VMA flag manipulation occurs. We do not cascade these changes to all functions which accept vm_flags_t, but rather use vma_flags_to_legacy() where necessary, specifically deferring converting calc_vm_prot_bits(), calc_vm_flag_bits() and __get_unmapped_area() to vma_flags_t. Also utilise the new vma_flags_can_grow() predicate which correctly handles the case of architectures without upward growing stacks. As part of this change, introduce VMA_SHADOW_STACK so we can correctly handle the case of the shadow stack not being defined. No functional change intended. Link: https://lore.kernel.org/[email protected] Signed-off-by: Lorenzo Stoakes <[email protected]> Reviewed-by: Lance Yang <[email protected]> Reviewed-by: Zi Yan <[email protected]> Reviewed-by: Vlastimil Babka (SUSE) <[email protected]> Cc: Baolin Wang <[email protected]> Cc: Barry Song <[email protected]> Cc: Christian Brauner <[email protected]> Cc: Dave Airlie <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: Dev Jain <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jann Horn <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Muchun Song <[email protected]> Cc: Nico Pache <[email protected]> Cc: Oscar Salvador <[email protected]> Cc: Pedro Falcato <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Thomas Zimmermann <[email protected]> Signed-off-by: Andrew Morton <[email protected]>	2026-08-06 18:57:01 -07:00
Thomas Bogendoerfer	5475c03fa2	MIPS: ptrace: Fix syscall skipping via PTRACE_SYSCALL ... If tracer wanted to skip a syscall return value was always overwritten with -ENOSYS. Fix this by checking against original syscall number and only return -ENOSYS, if it is negative. Fixes: b6318a903d ("MIPS/ptrace: Pick up ptrace/seccomp changed syscalls") Reviewed-by: Philippe Mathieu-Daudé <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-08-03 15:07:54 +02:00
Christian Brauner	79d27fd718	arch: hookup fchroot() system call ... Wire up the fchroot() system call as number 472 on (nearly) all architectures and sync the mirrored copies of the syscall tables and the asm-generic unistd.h under tools/. Link: https://patch.msgid.link/[email protected] Signed-off-by: Christian Brauner (Amutable) <[email protected]>	2026-07-27 17:18:00 +02:00
Geert Uytterhoeven	1d6f300c8e	MIPS: TXX9: Convert gpio_txx9 to dynamic GPIO base allocation ... Static allocation of GPIO base is deprecated, use dynamic allocation. Signed-off-by: Geert Uytterhoeven <[email protected]> Reviewed-by: Bartosz Golaszewski <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-07-17 12:43:09 +02:00
Markus Elfring	8121880ddc	MIPS: kernel: proc: Use two seq_putc() calls in show_cpuinfo() ... Single line breaks should occasionally be put into a sequence. Thus use the corresponding function “seq_putc”. The source code was transformed by using the Coccinelle software. Signed-off-by: Markus Elfring <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-07-17 12:41:43 +02:00
Thomas Weißschuh	8c0015572c	MIPS: vdso: Stop using CONFIG_HAVE_GENERIC_VDSO ... HAVE_GENERIC_VDSO is about to become an implementation detail. Use the MIPS-specific symbol instead. It is equivalent here. Signed-off-by: Thomas Weißschuh <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Reviewed-by: Vincenzo Frascino <[email protected]> Link: https://patch.msgid.link/[email protected]	2026-07-15 10:49:02 +02:00
Thomas Gleixner	622f04e974	ptrace, treewide: Rename ptrace_report_syscall_entry() to ptrace_report_syscall_permit_entry() ... The return value of that function is boolean and tells the caller whether to permit the syscall processing or not. Rename the function so the purpose is clear and make the return type bool. Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Mukesh Kumar Chaurasiya (IBM) <[email protected]> Reviewed-by: Jinjie Ruan <[email protected]> Reviewed-by: Radu Rendec <[email protected]> Reviewed-by: Mukesh Kumar Chaurasiya (IBM) <[email protected]> Acked-by: Oleg Nesterov <[email protected]> Acked-by: Magnus Lindholm <[email protected]> Link: https://patch.msgid.link/[email protected]	2026-07-12 12:38:02 +02:00
Jinjie Ruan	7ba2ba7471	seccomp, treewide: Rename and convert __secure_computing() to return boolean ... The return value of __secure_computing() currently uses 0 to indicate that a system call should be allowed, and -1 to indicate that it should be blocked/killed. This 0/-1 pattern is non-intuitive for a security check function and makes the control flow at the call sites less readable. Furthermore, any potential future changes to these return values would require a high-risk, error-prone audit of all its users across different architectures. Sanitize this logic by converting the return type of __secure_computing() to a proper boolean, where 'true' explicitly means 'allow' and 'false' means 'fail/deny'. Update all the two dozen or so call sites across the tree to align with this new boolean semantic. No functional changes are intended, as the callers still return -1 to the lower-level assembly entry code upon seccomp denial. Rename the function to __seccomp_permit_syscall() so that the purpose is entirely clear. [ tglx: Rename the function ] Suggested-by: Thomas Gleixner <[email protected]> Suggested-by: Mark Rutland <[email protected]> Signed-off-by: Jinjie Ruan <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Mukesh Kumar Chaurasiya (IBM) <[email protected]> Reviewed-by: Mukesh Kumar Chaurasiya (IBM) <[email protected]> Acked-by: Oleg Nesterov <[email protected]> Link: https://patch.msgid.link/[email protected]	2026-07-12 12:38:02 +02:00
Linus Torvalds	08c7183f5b	Merge tag 'mips_7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux ... Pull MIPS updates from Thomas Bogendoerfer: - use software nodes for GPIO code - cleanups and fixes * tag 'mips_7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (41 commits) mips: select legacy gpiolib interfaces where used MIPS: lib: Remove '.hidden' for local symbols MIPS: VDSO: Avoid including .got in dynamic segment MIPS: smp: report dying CPU to RCU in stop_this_cpu() MIPS: kernel: proc: Delete unnecessary braces in show_cpuinfo() MIPS: kernel: proc: Use seq_putc() calls in show_cpuinfo() mips: sched: Fix CPUMASK_OFFSTACK memory corruption MIPS: mm: Fix out-of-bounds write in maar_res_walk() MIPS: ath79: reduce ARCH_DMA_MINALIGN mips: dts: ar9132: fix wdt node name mips: Remove remaining defconfig references to the pktcdvd driver MIPS: mm: remove comment referring to removed CONFIG_MIPS_CMP MIPS: alchemy: db1300: switch to static device properties MIPS: alchemy: gpr: switch to static device properties MIPS: alchemy: db1000: use nodes attached to GPIO chips in properties MIPS: alchemy: mtx1: attach software nodes to GPIO chips MIPS: alchemy: provide visible function prototypes to board files MIPS: alchemy: platform: add missing include MIPS: ip22-gio: do not export device release function MIPS: ip22-gio: switch to dynamic root device ...	2026-06-19 07:46:16 -07:00
Jonas Jelonek	9f3f3bdc6d	MIPS: smp: report dying CPU to RCU in stop_this_cpu() ... smp_send_stop() parks all secondary CPUs in stop_this_cpu(). The function marks the CPU offline for the scheduler via set_cpu_online(false) but never informs RCU, so RCU keeps expecting a quiescent state from CPUs that are now spinning forever with interrupts disabled. As long as nothing waits for an RCU grace period after smp_send_stop() this is harmless, which is why it went unnoticed. Since commit 91840be8f7 ("irq_work: Fix use-after-free in irq_work_single() on PREEMPT_RT") however, irq_work_sync() calls synchronize_rcu() on architectures without an irq_work self-IPI, i.e. where arch_irq_work_has_interrupt() returns false. That is the asm-generic default used by MIPS. Any irq_work_sync() issued in the reboot/shutdown path after smp_send_stop() then blocks on a grace period that can never complete, hanging the reboot: WARNING: CPU: 0 PID: 15 at kernel/irq_work.c:144 irq_work_queue_on ... rcu: INFO: rcu_sched detected stalls on CPUs/tasks: rcu: Offline CPU 1 blocking current GP. rcu: Offline CPU 2 blocking current GP. rcu: Offline CPU 3 blocking current GP. This issue was noticed on several Realtek MIPS switch SoCs (MIPS interAptiv) and came up during kernel bump downstream in OpenWrt from 6.18.33 to 6.18.34, after the backport of the patch to the 6.18 stable branch. The patch also has been backported all the way back to 6.1. Call rcutree_report_cpu_dead() once interrupts are disabled, mirroring the generic CPU-hotplug offline path, so RCU stops waiting on the parked CPUs and grace periods can still complete. MIPS shuts down all CPUs here without going through the CPU-hotplug mechanism, so this report is not otherwise issued. Reporting a dying CPU to RCU outside the regular hotplug offline path is not unprecedented: arm64 does the same in cpu_die_early(). There it is an exception for a CPU that was coming online and is aborting bringup, rather than the default shutdown action as on MIPS. Fixes: 91840be8f7 ("irq_work: Fix use-after-free in irq_work_single() on PREEMPT_RT") CC: [email protected] Signed-off-by: Jonas Jelonek <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-06-15 12:20:33 +02:00
Markus Elfring	e1ac5f3742	MIPS: kernel: proc: Delete unnecessary braces in show_cpuinfo() ... Do not use curly brackets at one source code place where a single statement should be sufficient. Signed-off-by: Markus Elfring <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-06-15 12:19:50 +02:00
Markus Elfring	8998c0904c	MIPS: kernel: proc: Use seq_putc() calls in show_cpuinfo() ... Single characters should occasionally be put into a sequence. Thus use the corresponding function “seq_putc”. The source code was transformed by using the Coccinelle software. Signed-off-by: Markus Elfring <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-06-15 12:19:15 +02:00
Aaron Tomlin	98e37db4a3	mips: sched: Fix CPUMASK_OFFSTACK memory corruption ... This patch addresses a critical memory management flaw. When CONFIG_CPUMASK_OFFSTACK is enabled, cpumask_var_t is a pointer. Consequently, sizeof(new_mask) evaluates to the pointer size, causing copy_from_user() to clobber the mask pointer. Furthermore, the old logic performed copy_from_user() before allocating the mask. Fix this by allocating new_mask first. To handle variable-sized user masks correctly, use cpumask_size() to truncate overly large user masks or pad undersized masks with zeros before copying the data directly into the allocated buffer. Fixes: 295cbf6d63 ("[MIPS] Move FPU affinity code into separate file.") Cc: [email protected] Signed-off-by: Aaron Tomlin <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-06-15 12:17:27 +02:00
Thomas Weißschuh	f3dc8fb24f	MIPS: csrc-r4k: Only use VDSO_CLOCKMODE_R4K when it is a available ... VDSO_CLOCKMODE_R4K is only defined if CONFIG_GENERIC_GETTIMEOFDAY is enabled. Right now this is always the case, but it will change soon. Prepare for the potential unavailability of VDSO_CLOCKMODE_R4K. Signed-off-by: Thomas Weißschuh <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Cc: Thomas Bogendoerfer <[email protected]> Link: https://patch.msgid.link/[email protected]	2026-06-09 17:02:10 +02:00
Thomas Weißschuh	8ea920c48d	MIPS: VDSO: Only map the data pages when the vDSO is used ... A future change will make it possible to disable the time-related vDSO. In that case there is no point in calling into the datastore. Signed-off-by: Thomas Weißschuh <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Cc: Thomas Bogendoerfer <[email protected]> Link: https://patch.msgid.link/[email protected]	2026-06-04 18:22:45 +02:00
Rosen Penev	e5d64f868e	mips: cps: Assemble jr.hb with an R2 ISA level ... A MIPS allmodconfig built with LLVM can select CPU_MIPS32_R1 together with MIPS_MT_SMP. In that configuration clang invokes the integrated assembler with -march=mips32, and the MIPS MT path in cps-vec.S fails to assemble two jr.hb instructions: arch/mips/kernel/cps-vec.S:376:2: error: instruction requires a CPU feature not currently enabled arch/mips/kernel/cps-vec.S:490:4: error: instruction requires a CPU feature not currently enabled The earlier jr.hb in the same file is already assembled inside a .set MIPS_ISA_LEVEL_RAW scope. The two failing sites are reached after popping back to the file's base ISA level, so LLVM correctly rejects them for an R1 target. Wrap those jr.hb instructions in the same ISA-level push/pop used by the working site. This keeps the MT code unchanged while making the required R2 hazard-branch encoding explicit to the assembler. Assisted-by: Codex:GPT-5.5 Signed-off-by: Rosen Penev <[email protected]> Reviewed-by: Maciej W. Rozycki <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-05-26 16:35:36 +02:00
Maciej W. Rozycki	a032121b27	MIPS: Make do_IRQ() available for assembly callers ... As from commit 8f99a16265 ("MIPS: Tracing: Add IRQENTRY_EXIT section for MIPS") do_IRQ() is not a macro anymore and can be invoked directly from assembly code again, however its `asmlinkage' annotation has never been brought back from the previous removal of the function with commit 187933f236 ("[MIPS] do_IRQ cleanup"). Since calling the function directly from assembly code has a performance advantage, add the annotation back so that the DEC platform can make use of this again. Signed-off-by: Maciej W. Rozycki <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-05-26 16:35:36 +02:00
Linus Torvalds	d730905bc3	Merge tag 'mips_7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux ... Pull MIPS updates from Thomas Bogendoerfer: - Support for Mobileye EyeQ6Lplus - Cleanups and fixes * tag 'mips_7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (30 commits) MIPS/mtd: Handle READY GPIO in generic NAND platform data MIPS/input: Move RB532 button to GPIO descriptors MIPS: validate DT bootargs before appending them MIPS: Alchemy: Remove unused forward declaration MAINTAINERS: Mobileye: Add EyeQ6Lplus files MIPS: config: add eyeq6lplus_defconfig MIPS: Add Mobileye EyeQ6Lplus evaluation board dts MIPS: Add Mobileye EyeQ6Lplus SoC dtsi clk: eyeq: Add Mobileye EyeQ6Lplus OLB clk: eyeq: Adjust PLL accuracy computation clk: eyeq: Skip post-divisor when computing PLL frequency pinctrl: eyeq5: Add Mobileye EyeQ6Lplus OLB pinctrl: eyeq5: Use match data reset: eyeq: Add Mobileye EyeQ6Lplus OLB MIPS: Add Mobileye EyeQ6Lplus support dt-bindings: soc: mobileye: Add EyeQ6Lplus OLB dt-bindings: mips: Add Mobileye EyeQ6Lplus SoC MIPS: dts: loongson64g-package: Switch to Loongson UART driver mips: pci-mt7620: rework initialization procedure mips: pci-mt7620: add more register init values ...	2026-04-17 08:53:23 -07:00
Linus Torvalds	f21f7b5162	Merge tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Pull vdso updates from Thomas Gleixner: - Make the handling of compat functions consistent and more robust - Rework the underlying data store so that it is dynamically allocated, which allows the conversion of the last holdout SPARC64 to the generic VDSO implementation - Rework the SPARC64 VDSO to utilize the generic implementation - Mop up the left overs of the non-generic VDSO support in the core code - Expand the VDSO selftest and make them more robust - Allow time namespaces to be enabled independently of the generic VDSO support, which was not possible before due to SPARC64 not using it - Various cleanups and improvements in the related code * tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits) timens: Use task_lock guard in timens_get*() timens: Use mutex guard in proc_timens_set_offset() timens: Simplify some calls to put_time_ns() timens: Add a __free() wrapper for put_time_ns() timens: Remove dependency on the vDSO vdso/timens: Move functions to new file selftests: vDSO: vdso_test_correctness: Add a test for time() selftests: vDSO: vdso_test_correctness: Use facilities from parse_vdso.c selftests: vDSO: vdso_test_correctness: Handle different tv_usec types selftests: vDSO: vdso_test_correctness: Drop SYS_getcpu fallbacks selftests: vDSO: vdso_test_gettimeofday: Remove nolibc checks Revert "selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers" random: vDSO: Remove ifdeffery random: vDSO: Trim vDSO includes vdso/datapage: Trim down unnecessary includes vdso/datapage: Remove inclusion of gettimeofday.h vdso/helpers: Explicitly include vdso/processor.h vdso/gettimeofday: Add explicit includes random: vDSO: Add explicit includes MIPS: vdso: Explicitly include asm/vdso/vdso.h ...	2026-04-14 10:53:44 -07:00
Linus Torvalds	ef3da345cc	Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs ... Pull misc vfs updates from Christian Brauner: "Features: - coredump: add tracepoint for coredump events - fs: hide file and bfile caches behind runtime const machinery Fixes: - fix architecture-specific compat_ftruncate64 implementations - dcache: Limit the minimal number of bucket to two - fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - fs/mbcache: cancel shrink work before destroying the cache - dcache: permit dynamic_dname()s up to NAME_MAX Cleanups: - remove or unexport unused fs_context infrastructure - trivial ->setattr cleanups - selftests/filesystems: Assume that TIOCGPTPEER is defined - writeback: fix kernel-doc function name mismatch for wb_put_many() - autofs: replace manual symlink buffer allocation in autofs_dir_symlink - init/initramfs.c: trivial fix: FSM -> Finite-state machine - fs: remove stale and duplicate forward declarations - readdir: Introduce dirent_size() - fs: Replace user_access_{begin/end} by scoped user access - kernel: acct: fix duplicate word in comment - fs: write a better comment in step_into() concerning .mnt assignment - fs: attr: fix comment formatting and spelling issues" * tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (28 commits) dcache: permit dynamic_dname()s up to NAME_MAX fs: attr: fix comment formatting and spelling issues fs: hide file and bfile caches behind runtime const machinery fs: write a better comment in step_into() concerning .mnt assignment proc: rename proc_notify_change to proc_setattr proc: rename proc_setattr to proc_nochmod_setattr affs: rename affs_notify_change to affs_setattr adfs: rename adfs_notify_change to adfs_setattr hfs: update comments on hfs_inode_setattr kernel: acct: fix duplicate word in comment fs: Replace user_access_{begin/end} by scoped user access readdir: Introduce dirent_size() coredump: add tracepoint for coredump events fs: remove do_sys_truncate fs: pass on FTRUNCATE_* flags to do_truncate fs: fix archiecture-specific compat_ftruncate64 fs: remove stale and duplicate forward declarations init/initramfs.c: trivial fix: FSM -> Finite-state machine autofs: replace manual symlink buffer allocation in autofs_dir_symlink fs/mbcache: cancel shrink work before destroying the cache ...	2026-04-13 14:20:11 -07:00
Pengpeng Hou	f992846d0b	MIPS: validate DT bootargs before appending them ... bootcmdline_scan_chosen() fetches the raw flat-DT bootargs property and passes it straight to bootcmdline_append(). That helper later feeds the same pointer into strlcat(), which computes strlen(src) before copying. Flat DT properties are external boot input, and this path does not prove that bootargs is NUL-terminated within its declared bounds. Reject unterminated bootargs properties before appending them to the kernel command line. Signed-off-by: Pengpeng Hou <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-04-13 15:36:36 +02:00
Maciej W. Rozycki	a163a96d4a	MIPS: kernel: Remove $0 clobber from `mult_sh_align_mod' ... Remove rubbish $0 clobber added to inline asm within `mult_sh_align_mod' with the removal of support for GCC versions below 3.4 made with commit 57810ecb58 ("MIPS: Remove GCC_IMM_ASM & GCC_REG_ACCUM macros"). Previously a macro was used that, depending on GCC version, expanded to either `accum' or $0. Since the latter choice was only a placeholder to keep the syntax consistent and the register referred is hardwired, there is no point in having it here as it has no effect on code generation. Signed-off-by: Maciej W. Rozycki <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-04-06 14:01:59 +02:00
Linus Torvalds	eb3765aa71	Merge tag 'mips-fixes_7.0_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux ... Pull MIPS fixes from Thomas Bogendoerfer: - Fix TLB uniquification for systems with TLB not initialised by firmware - Fix allocation in TLB uniquification - Fix SiByte cache initialisation - Check uart parameters from firmware on Loongson64 systems - Fix clock id mismatch for Ralink SoCs - Fix GCC version check for __mutli3 workaround * tag 'mips-fixes_7.0_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: mips: mm: Allocate tlb_vpn array atomically MIPS: mm: Rewrite TLB uniquification for the hidden bit feature MIPS: mm: Suppress TLB uniquification on EHINV hardware MIPS: Always record SEGBITS in cpu_data.vmbits MIPS: Fix the GCC version check for `__multi3' workaround MIPS: SiByte: Bring back cache initialisation mips: ralink: update CPU clock index MIPS: Loongson64: env: Check UARTs passed by LEFI cautiously	2026-04-05 11:29:07 -07:00
Maciej W. Rozycki	8374c2cb83	MIPS: Always record SEGBITS in cpu_data.vmbits ... With a 32-bit kernel running on 64-bit MIPS hardware the hardcoded value of `cpu_vmbits' only records the size of compatibility useg and does not reflect the size of native xuseg or the complete range of values allowed in the VPN2 field of TLB entries. An upcoming change will need the actual VPN2 value range permitted even in 32-bit kernel configurations, so always include the `vmbits' member in `struct cpuinfo_mips' and probe for SEGBITS when running on 64-bit hardware and resorting to the currently hardcoded value of 31 on 32-bit processors. No functional change for users of `cpu_vmbits'. Signed-off-by: Maciej W. Rozycki <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-04-01 21:53:50 +02:00
Christoph Hellwig	e43dce8a0b	fs: fix archiecture-specific compat_ftruncate64 ... The "small" argument to do_sys_ftruncate indicates if > 32-bit size should be reject, but all the arch-specific compat ftruncate64 implementations get this wrong. Merge do_sys_ftruncate and ksys_ftruncate, replace the integer as boolean small flag with a descriptive one about LFS semantics, and use it correctly in the architecture-specific ftruncate64 implementations. Fixes: 1da177e4c3 ("Linux-2.6.12-rc2") Fixes: 3dd681d944 ("arm64: 32-bit (compat) applications support") Signed-off-by: Christoph Hellwig <[email protected]> Link: https://patch.msgid.link/[email protected] Reviewed-by: Jan Kara <[email protected]> Signed-off-by: Christian Brauner <[email protected]>	2026-03-23 12:41:57 +01:00
Thomas Weißschuh	5dca096e86	MIPS: vdso: Explicitly include asm/vdso/vdso.h ... The usage of __VDSO_PAGES requires asm/vdso/vdso.h. Currently this header is included transitively, but that transitive inclusion is about to go away. Explicitly include the header. Signed-off-by: Thomas Weißschuh <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Borislav Petkov (AMD) <[email protected]> Link: https://patch.msgid.link/[email protected]	2026-03-11 15:12:50 +01:00
Nathan Chancellor	8678591b47	kbuild: Split .modinfo out from ELF_DETAILS ... Commit 3e86e4d74c ("kbuild: keep .modinfo section in vmlinux.unstripped") added .modinfo to ELF_DETAILS while removing it from COMMON_DISCARDS, as it was needed in vmlinux.unstripped and ELF_DETAILS was present in all architecture specific vmlinux linker scripts. While this shuffle is fine for vmlinux, ELF_DETAILS and COMMON_DISCARDS may be used by other linker scripts, such as the s390 and x86 compressed boot images, which may not expect to have a .modinfo section. In certain circumstances, this could result in a bootloader failing to load the compressed kernel [1]. Commit ddc6cbef3e ("s390/boot/vmlinux.lds.S: Ensure bzImage ends with SecureBoot trailer") recently addressed this for the s390 bzImage but the same bug remains for arm, parisc, and x86. The presence of .modinfo in the x86 bzImage was the root cause of the issue worked around with commit d50f210913 ("kbuild: align modinfo section for Secureboot Authenticode EDK2 compat"). misc.c in arch/x86/boot/compressed includes lib/decompress_unzstd.c, which in turn includes lib/xxhash.c and its MODULE_LICENSE / MODULE_DESCRIPTION macros due to the STATIC definition. Split .modinfo out from ELF_DETAILS into its own macro and handle it in all vmlinux linker scripts. Discard .modinfo in the places where it was previously being discarded from being in COMMON_DISCARDS, as it has never been necessary in those uses. Cc: [email protected] Fixes: 3e86e4d74c ("kbuild: keep .modinfo section in vmlinux.unstripped") Reported-by: Ed W <[email protected]> Closes: https://lore.kernel.org/[email protected]/ [1] Tested-by: Ed W <[email protected]> # x86_64 Link: https://patch.msgid.link/20260225-separate-modinfo-from-elf-details-v1-1-387ced6baf4b@kernel.org Signed-off-by: Nathan Chancellor <[email protected]>	2026-02-26 11:50:19 -07:00
Kees Cook	189f164e57	Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses ... Conversion performed via this Coccinelle script: // SPDX-License-Identifier: GPL-2.0-only // Options: --include-headers-for-types --all-includes --include-headers --keep-comments virtual patch @gfp depends on patch && !(file in "tools") && !(file in "samples")@ identifier ALLOC = {kmalloc_obj,kmalloc_objs,kmalloc_flex, kzalloc_obj,kzalloc_objs,kzalloc_flex, kvmalloc_obj,kvmalloc_objs,kvmalloc_flex, kvzalloc_obj,kvzalloc_objs,kvzalloc_flex}; @@ ALLOC(... - , GFP_KERNEL ) $ make coccicheck MODE=patch COCCI=gfp.cocci Build and boot tested x86_64 with Fedora 42's GCC and Clang: Linux version 6.19.0+ (user@host) (gcc (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7), GNU ld version 2.44-12.fc42) #1 SMP PREEMPT_DYNAMIC 1970-01-01 Linux version 6.19.0+ (user@host) (clang version 20.1.8 (Fedora 20.1.8-4.fc42), LLD 20.1.8) #1 SMP PREEMPT_DYNAMIC 1970-01-01 Signed-off-by: Kees Cook <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>	2026-02-22 08:26:33 -08:00
Linus Torvalds	bf4afc53b7	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument ... This was done entirely with mindless brute force, using git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' | xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/' to convert the new alloc_obj() users that had a simple GFP_KERNEL argument to just drop that argument. Note that due to the extreme simplicity of the scripting, any slightly more complex cases spread over multiple lines would not be triggered: they definitely exist, but this covers the vast bulk of the cases, and the resulting diff is also then easier to check automatically. For the same reason the 'flex' versions will be done as a separate conversion. Signed-off-by: Linus Torvalds <[email protected]>	2026-02-21 17:09:51 -08:00
Kees Cook	69050f8d6d	treewide: Replace kmalloc with kmalloc_obj for non-scalar types ... This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <[email protected]>	2026-02-21 01:02:28 -08:00
Linus Torvalds	6086f349a3	Merge tag 'mips_7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux ... Pull MIPS updates from Thomas Bogendoerfer: "Cleanups and fixes" * tag 'mips_7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (28 commits) Revert "clk: microchip: core: allow driver to be compiled with COMPILE_TEST" Revert "clk: microchip: fix typo in reference to a config option" MIPS: Implement ARCH_HAS_CC_CAN_LINK MIPS: rb532: Fix MMIO UART resource registration MIPS: Work around LLVM bug when gp is used as global register variable MIPS: Loongson64: env: Fixup serial clock-frequency when using LEFI MIPS: Loongson2ef: Use pcibios_align_resource() to block io range MIPS: Loongson2ef: Register PCI controller in early stage clk: microchip: fix typo in reference to a config option MIPS: Loongson64: dts: fix phy-related definition of LS7A GMAC clk: microchip: core: allow driver to be compiled with COMPILE_TEST MIPS: drop unused pic32.h header watchdog: pic32-wdt: update include to use pic32.h from platform_data watchdog: pic32-dmt: update include to use pic32.h from platform_data serial: pic32_uart: update include to use pic32.h from platform_data rtc: pic32: update include to use pic32.h from platform_data pinctrl: pic32: update include to use pic32.h from platform_data mmc: sdhci-pic32: update include to use pic32.h from platform_data irqchip/irq-pic32-evic: update include to use pic32.h from platform_data clk: microchip: core: update include to use pic32.h from platform_data ...	2026-02-16 09:30:44 -08:00
Linus Torvalds	136114e0ab	Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ... Pull non-MM updates from Andrew Morton: - "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves disk space by teaching ocfs2 to reclaim suballocator block group space (Heming Zhao) - "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the ARRAY_END() macro and uses it in various places (Alejandro Colomar) - "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the page size (Pnina Feder) - "kallsyms: Prevent invalid access when showing module buildid" cleans up kallsyms code related to module buildid and fixes an invalid access crash when printing backtraces (Petr Mladek) - "Address page fault in ima_restore_measurement_list()" fixes a kexec-related crash that can occur when booting the second-stage kernel on x86 (Harshit Mogalapalli) - "kho: ABI headers and Documentation updates" updates the kexec handover ABI documentation (Mike Rapoport) - "Align atomic storage" adds the __aligned attribute to atomic_t and atomic64_t definitions to get natural alignment of both types on csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain) - "kho: clean up page initialization logic" simplifies the page initialization logic in kho_restore_page() (Pratyush Yadav) - "Unload linux/kernel.h" moves several things out of kernel.h and into more appropriate places (Yury Norov) - "don't abuse task_struct.group_leader" removes the usage of ->group_leader when it is "obviously unnecessary" (Oleg Nesterov) - "list private v2 & luo flb" adds some infrastructure improvements to the live update orchestrator (Pasha Tatashin) * tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits) watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency procfs: fix missing RCU protection when reading real_parent in do_task_stat() watchdog/softlockup: fix sample ring index wrap in need_counting_irqs() kcsan, compiler_types: avoid duplicate type issues in BPF Type Format kho: fix doc for kho_restore_pages() tests/liveupdate: add in-kernel liveupdate test liveupdate: luo_flb: introduce File-Lifecycle-Bound global state liveupdate: luo_file: Use private list list: add kunit test for private list primitives list: add primitives for private list manipulations delayacct: fix uapi timespec64 definition panic: add panic_force_cpu= parameter to redirect panic to a specific CPU netclassid: use thread_group_leader(p) in update_classid_task() RDMA/umem: don't abuse current->group_leader drm/pan*: don't abuse current->group_leader drm/amd: kill the outdated "Only the pthreads threading model is supported" checks drm/amdgpu: don't abuse current->group_leader android/binder: use same_thread_group(proc->tsk, current) in binder_mmap() android/binder: don't abuse current->group_leader kho: skip memoryless NUMA nodes when reserving scratch areas ...	2026-02-12 12:13:01 -08:00
Linus Torvalds	4cff5c05e0	Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ... Pull MM updates from Andrew Morton: - "powerpc/64s: do not re-activate batched TLB flush" makes arch_{enter|leave}_lazy_mmu_mode() nest properly (Alexander Gordeev) It adds a generic enter/leave layer and switches architectures to use it. Various hacks were removed in the process. - "zram: introduce compressed data writeback" implements data compression for zram writeback (Richard Chang and Sergey Senozhatsky) - "mm: folio_zero_user: clear page ranges" adds clearing of contiguous page ranges for hugepages. Large improvements during demand faulting are demonstrated (David Hildenbrand) - "memcg cleanups" tidies up some memcg code (Chen Ridong) - "mm/damon: introduce {,max_}nr_snapshots and tracepoint for damos stats" improves DAMOS stat's provided information, deterministic control, and readability (SeongJae Park) - "selftests/mm: hugetlb cgroup charging: robustness fixes" fixes a few issues in the hugetlb cgroup charging selftests (Li Wang) - "Fix va_high_addr_switch.sh test failure - again" addresses several issues in the va_high_addr_switch test (Chunyu Hu) - "mm/damon/tests/core-kunit: extend existing test scenarios" improves the KUnit test coverage for DAMON (Shu Anzai) - "mm/khugepaged: fix dirty page handling for MADV_COLLAPSE" fixes a glitch in khugepaged which was causing madvise(MADV_COLLAPSE) to transiently return -EAGAIN (Shivank Garg) - "arch, mm: consolidate hugetlb early reservation" reworks and consolidates a pile of straggly code related to reservation of hugetlb memory from bootmem and creation of CMA areas for hugetlb (Mike Rapoport) - "mm: clean up anon_vma implementation" cleans up the anon_vma implementation in various ways (Lorenzo Stoakes) - "tweaks for __alloc_pages_slowpath()" does a little streamlining of the page allocator's slowpath code (Vlastimil Babka) - "memcg: separate private and public ID namespaces" cleans up the memcg ID code and prevents the internal-only private IDs from being exposed to userspace (Shakeel Butt) - "mm: hugetlb: allocate frozen gigantic folio" cleans up the allocation of frozen folios and avoids some atomic refcount operations (Kefeng Wang) - "mm/damon: advance DAMOS-based LRU sorting" improves DAMOS's movement of memory betewwn the active and inactive LRUs and adds auto-tuning of the ratio-based quotas and of monitoring intervals (SeongJae Park) - "Support page table check on PowerPC" makes CONFIG_PAGE_TABLE_CHECK_ENFORCED work on powerpc (Andrew Donnellan) - "nodemask: align nodes_and{,not} with underlying bitmap ops" makes nodes_and() and nodes_andnot() propagate the return values from the underlying bit operations, enabling some cleanup in calling code (Yury Norov) - "mm/damon: hide kdamond and kdamond_lock from API callers" cleans up some DAMON internal interfaces (SeongJae Park) - "mm/khugepaged: cleanups and scan limit fix" does some cleanup work in khupaged and fixes a scan limit accounting issue (Shivank Garg) - "mm: balloon infrastructure cleanups" goes to town on the balloon infrastructure and its page migration function. Mainly cleanups, also some locking simplification (David Hildenbrand) - "mm/vmscan: add tracepoint and reason for kswapd_failures reset" adds additional tracepoints to the page reclaim code (Jiayuan Chen) - "Replace wq users and add WQ_PERCPU to alloc_workqueue() users" is part of Marco's kernel-wide migration from the legacy workqueue APIs over to the preferred unbound workqueues (Marco Crivellari) - "Various mm kselftests improvements/fixes" provides various unrelated improvements/fixes for the mm kselftests (Kevin Brodsky) - "mm: accelerate gigantic folio allocation" greatly speeds up gigantic folio allocation, mainly by avoiding unnecessary work in pfn_range_valid_contig() (Kefeng Wang) - "selftests/damon: improve leak detection and wss estimation reliability" improves the reliability of two of the DAMON selftests (SeongJae Park) - "mm/damon: cleanup kdamond, damon_call(), damos filter and DAMON_MIN_REGION" does some cleanup work in the core DAMON code (SeongJae Park) - "Docs/mm/damon: update intro, modules, maintainer profile, and misc" performs maintenance work on the DAMON documentation (SeongJae Park) - "mm: add and use vma_assert_stabilised() helper" refactors and cleans up the core VMA code. The main aim here is to be able to use the mmap write lock's lockdep state to perform various assertions regarding the locking which the VMA code requires (Lorenzo Stoakes) - "mm, swap: swap table phase II: unify swapin use" removes some old swap code (swap cache bypassing and swap synchronization) which wasn't working very well. Various other cleanups and simplifications were made. The end result is a 20% speedup in one benchmark (Kairui Song) - "enable PT_RECLAIM on more 64-bit architectures" makes PT_RECLAIM available on 64-bit alpha, loongarch, mips, parisc, and um. Various cleanups were performed along the way (Qi Zheng) * tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (325 commits) mm/memory: handle non-split locks correctly in zap_empty_pte_table() mm: move pte table reclaim code to memory.c mm: make PT_RECLAIM depends on MMU_GATHER_RCU_TABLE_FREE mm: convert __HAVE_ARCH_TLB_REMOVE_TABLE to CONFIG_HAVE_ARCH_TLB_REMOVE_TABLE config um: mm: enable MMU_GATHER_RCU_TABLE_FREE parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE mips: mm: enable MMU_GATHER_RCU_TABLE_FREE LoongArch: mm: enable MMU_GATHER_RCU_TABLE_FREE alpha: mm: enable MMU_GATHER_RCU_TABLE_FREE mm: change mm/pt_reclaim.c to use asm/tlb.h instead of asm-generic/tlb.h mm/damon/stat: remove __read_mostly from memory_idle_ms_percentiles zsmalloc: make common caches global mm: add SPDX id lines to some mm source files mm/zswap: use %pe to print error pointers mm/vmscan: use %pe to print error pointers mm/readahead: fix typo in comment mm: khugepaged: fix NR_FILE_PAGES and NR_SHMEM in collapse_file() mm: refactor vma_map_pages to use vm_insert_pages mm/damon: unify address range representation with damon_addr_range mm/cma: replace snprintf with strscpy in cma_new_area ...	2026-02-12 11:32:37 -08:00
Linus Torvalds	66bbe4a8ed	Merge tag 'irq-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Pull irq core updates from Thomas Gleixner: "Updates for the interrupt core subsystem: - Remove the interrupt timing infrastructure This was added seven years ago to be used for power management purposes, but that integration never happened. - Clean up the remaining setup_percpu_irq() users The memory allocator is available when interrupts can be requested so there is not need for static irq_action. Move the remaining users to request_percpu_irq() and delete the historical cruft. - Warn when interrupt flag inconsistencies are detected in request*_irq(). Inconsistent flags can lead to hard to diagnose malfunction. The fallout of this new warning has been addressed in next and the fixes are coming in via the maintainer trees and the tip irq/cleanup pull requests. - Invoke affinity notifier when CPU hotplug breaks affinity Otherwise the code using the notifier misses the affinity change and operates on stale information. - The usual cleanups and improvements" * tag 'irq-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq/proc: Replace snprintf with strscpy in register_handler_proc genirq/cpuhotplug: Notify about affinity changes breaking the affinity mask genirq: Move clear of kstat_irqs to free_desc() genirq: Warn about using IRQF_ONESHOT without a threaded handler irqdomain: Fix up const problem in irq_domain_set_name() genirq: Remove setup_percpu_irq() clocksource/drivers/mips-gic-timer: Move GIC timer to request_percpu_irq() MIPS: Move IP27 timer to request_percpu_irq() MIPS: Move IP30 timer to request_percpu_irq() genirq: Remove __request_percpu_irq() helper genirq: Remove IRQ timing tracking infrastructure	2026-02-10 13:39:37 -08:00
Linus Torvalds	36ae1c45b2	Merge tag 'sched-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Pull scheduler updates from Ingo Molnar: "Scheduler Kconfig space updates: - Further consolidate configurable preemption modes (Peter Zijlstra) Reduce the number of architectures that are allowed to offer PREEMPT_NONE and PREEMPT_VOLUNTARY, reducing the number of preemption models from four to just two: 'full' and 'lazy' on up-to-date architectures (arm64, loongarch, powerpc, riscv, s390, x86). None and voluntary are only available as legacy features on platforms that don't implement lazy preemption yet, or which don't even support preemption. The goal is to eventually remove cond_resched() and voluntary preemption altogether. RSEQ based 'scheduler time slice extension' support (Thomas Gleixner and Peter Zijlstra): This allows a thread to request a time slice extension when it enters a critical section to avoid contention on a resource when the thread is scheduled out inside of the critical section. - Add fields and constants for time slice extension - Provide static branch for time slice extensions - Add statistics for time slice extensions - Add prctl() to enable time slice extensions - Implement sys_rseq_slice_yield() - Implement syscall entry work for time slice extensions - Implement time slice extension enforcement timer - Reset slice extension when scheduled - Implement rseq_grant_slice_extension() - entry: Hook up rseq time slice extension - selftests: Implement time slice extension test - Allow registering RSEQ with slice extension - Move slice_ext_nsec to debugfs - Lower default slice extension - selftests/rseq: Add rseq slice histogram script Scheduler performance/scalability improvements: - Update rq->avg_idle when a task is moved to an idle CPU, which improves the scalability of various workloads (Shubhang Kaushik) - Reorder fields in 'struct rq' for better caching (Blake Jones) - Fair scheduler SMP NOHZ balancing code speedups (Shrikanth Hegde): - Move checking for nohz cpus after time check - Change likelyhood of nohz.nr_cpus - Remove nohz.nr_cpus and use weight of cpumask instead - Avoid false sharing for sched_clock_irqtime (Wangyang Guo) - Cleanups (Yury Norov): - Drop useless cpumask_empty() in find_energy_efficient_cpu() - Simplify task_numa_find_cpu() - Use cpumask_weight_and() in sched_balance_find_dst_group() DL scheduler updates: - Add a deadline server for sched_ext tasks (by Andrea Righi and Joel Fernandes, with fixes by Peter Zijlstra) RT scheduler updates: - Skip currently executing CPU in rto_next_cpu() (Chen Jinghuang) Entry code updates and performance improvements (Jinjie Ruan) This is part of the scheduler tree in this cycle due to inter- dependencies with the RSEQ based time slice extension work: - Remove unused syscall argument from syscall_trace_enter() - Rework syscall_exit_to_user_mode_work() for architecture reuse - Add arch_ptrace_report_syscall_entry/exit() - Inline syscall_exit_work() and syscall_trace_enter() Scheduler core updates (Peter Zijlstra): - Rework sched_class::wakeup_preempt() and rq_modified_*() - Avoid rq->lock bouncing in sched_balance_newidle() - Rename rcu_dereference_check_sched_domain() => rcu_dereference_sched_domain() - <linux/compiler_types.h>: Add the __signed_scalar_typeof() helper Fair scheduler updates/refactoring (Peter Zijlstra and Ingo Molnar): - Fold the sched_avg update - Change rcu_dereference_check_sched_domain() to rcu-sched - Switch to rcu_dereference_all() - Remove superfluous rcu_read_lock() - Limit hrtick work - Join two #ifdef CONFIG_FAIR_GROUP_SCHED blocks - Clean up comments in 'struct cfs_rq' - Separate se->vlag from se->vprot - Rename cfs_rq::avg_load to cfs_rq::sum_weight - Rename cfs_rq::avg_vruntime to ::sum_w_vruntime & helper functions - Introduce and use the vruntime_cmp() and vruntime_op() wrappers for wrapped-signed aritmetics - Sort out 'blocked_load*' namespace noise Scheduler debugging code updates: - Export hidden tracepoints to modules (Gabriele Monaco) - Convert copy_from_user() + kstrtouint() to kstrtouint_from_user() (Fushuai Wang) - Add assertions to QUEUE_CLASS (Peter Zijlstra) - hrtimer: Fix tracing oddity (Thomas Gleixner) Misc fixes and cleanups: - Re-evaluate scheduling when migrating queued tasks out of throttled cgroups (Zicheng Qu) - Remove task_struct->faults_disabled_mapping (Christoph Hellwig) - Fix math notation errors in avg_vruntime comment (Zhan Xusheng) - sched/cpufreq: Use %pe format for PTR_ERR() printing (zenghongling)" * tag 'sched-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits) sched: Re-evaluate scheduling when migrating queued tasks out of throttled cgroups sched/cpufreq: Use %pe format for PTR_ERR() printing sched/rt: Skip currently executing CPU in rto_next_cpu() sched/clock: Avoid false sharing for sched_clock_irqtime selftests/sched_ext: Add test for DL server total_bw consistency selftests/sched_ext: Add test for sched_ext dl_server sched/debug: Fix dl_server (re)start conditions sched/debug: Add support to change sched_ext server params sched_ext: Add a DL server for sched_ext tasks sched/debug: Stop and start server based on if it was active sched/debug: Fix updating of ppos on server write ops sched/deadline: Clear the defer params entry: Inline syscall_exit_work() and syscall_trace_enter() entry: Add arch_ptrace_report_syscall_entry/exit() entry: Rework syscall_exit_to_user_mode_work() for architecture reuse entry: Remove unused syscall argument from syscall_trace_enter() sched: remove task_struct->faults_disabled_mapping sched: Update rq->avg_idle when a task is moved to an idle CPU selftests/rseq: Add rseq slice histogram script hrtimer: Fix trace oddity ...	2026-02-10 12:50:10 -08:00
Yao Zi	30bfc2d6a1	MIPS: Work around LLVM bug when gp is used as global register variable ... On MIPS, __current_thread_info is defined as global register variable locating in $gp, and is simply assigned with new address during kernel relocation. This however is broken with LLVM, which always restores $gp if it finds $gp is clobbered in any form, including when intentionally through a global register variable. This is against GCC's documentation[1], which requires a callee-saved register used as global register variable not to be restored if it's clobbered. As a result, $gp will continue to point to the unrelocated kernel after the epilog of relocate_kernel(), leading to an early crash in init_idle, [ 0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000000000000000, epc == ffffffff81afada8, ra == ffffffff81afad90 [ 0.000000] Oops[#1]: [ 0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Tainted: G W 6.19.0-rc5-00262-gd3eeb99bbc99-dirty #188 VOLUNTARY [ 0.000000] Tainted: [W]=WARN [ 0.000000] Hardware name: loongson,loongson64v-4core-virtio [ 0.000000] $ 0 : 0000000000000000 0000000000000000 0000000000000001 0000000000000000 [ 0.000000] $ 4 : ffffffff80b80ec0 ffffffff80b53d48 0000000000000000 00000000000f4240 [ 0.000000] $ 8 : 0000000000000100 ffffffff81d82f80 ffffffff81d82f80 0000000000000001 [ 0.000000] $12 : 0000000000000000 ffffffff81776f58 00000000000005da 0000000000000002 [ 0.000000] $16 : ffffffff80b80e40 0000000000000000 ffffffff80b81614 9800000005dfbe80 [ 0.000000] $20 : 00000000540000e0 ffffffff81980000 0000000000000000 ffffffff80f81c80 [ 0.000000] $24 : 0000000000000a26 ffffffff8114fb90 [ 0.000000] $28 : ffffffff80b50000 ffffffff80b53d40 0000000000000000 ffffffff81afad90 [ 0.000000] Hi : 0000000000000000 [ 0.000000] Lo : 0000000000000000 [ 0.000000] epc : ffffffff81afada8 init_idle+0x130/0x270 [ 0.000000] ra : ffffffff81afad90 init_idle+0x118/0x270 [ 0.000000] Status: 540000e2 KX SX UX KERNEL EXL [ 0.000000] Cause : 00000008 (ExcCode 02) [ 0.000000] BadVA : 0000000000000000 [ 0.000000] PrId : 00006305 (ICT Loongson-3) [ 0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____), tls=0000000000000000) [ 0.000000] Stack : 9800000005dfbf00 ffffffff8178e950 0000000000000000 0000000000000000 [ 0.000000] 0000000000000000 ffffffff81970000 000000000000003f ffffffff810a6528 [ 0.000000] 0000000000000001 9800000005dfbe80 9800000005dfbf00 ffffffff81980000 [ 0.000000] ffffffff810a6450 ffffffff81afb6c0 0000000000000000 ffffffff810a2258 [ 0.000000] ffffffff81d82ec8 ffffffff8198d010 ffffffff81b67e80 ffffffff8197dd98 [ 0.000000] ffffffff81d81c80 ffffffff81930000 0000000000000040 0000000000000000 [ 0.000000] 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 0.000000] 0000000000000000 000000000000009e ffffffff9fc01000 0000000000000000 [ 0.000000] 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 0.000000] 0000000000000000 ffffffff81ae86dc ffffffff81b3c741 0000000000000002 [ 0.000000] ... [ 0.000000] Call Trace: [ 0.000000] [<ffffffff81afada8>] init_idle+0x130/0x270 [ 0.000000] [<ffffffff81afb6c0>] sched_init+0x5c8/0x6c0 [ 0.000000] [<ffffffff81ae86dc>] start_kernel+0x27c/0x7a8 This bug has been reported to LLVM[2] and affects version from (at least) 18 to 21. Let's work around this by using inline assembly to assign $gp before a fix is widely available. Cc: [email protected] Link: https://gcc.gnu.org/onlinedocs/gcc-15.2.0/gcc/Global-Register-Variables.html # [1] Link: https://github.com/llvm/llvm-project/issues/176546 # [2] Signed-off-by: Yao Zi <[email protected]> Acked-by: Nathan Chancellor <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2026-02-09 12:49:29 +01:00
Mike Rapoport (Microsoft)	5dea39496c	mips: drop paging_init() ... All three variants of paging_init() on MIPS are wrappers for pagetable_init(). Instead of having three identical wrappers, call pagetable_init() directly from setup_arch() and remove the unnecessary paging_init() functions. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport (Microsoft) <[email protected]> Cc: Alexander Gordeev <[email protected]> Cc: Alex Shi <[email protected]> Cc: Andreas Larsson <[email protected]> Cc: "Borislav Petkov (AMD)" <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: David S. Miller <[email protected]> Cc: Dinh Nguyen <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Guo Ren <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Helge Deller <[email protected]> Cc: Huacai Chen <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Johannes Berg <[email protected]> Cc: John Paul Adrian Glaubitz <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Klara Modin <[email protected]> Cc: Liam Howlett <[email protected]> Cc: Lorenzo Stoakes <[email protected]> Cc: Magnus Lindholm <[email protected]> Cc: Matt Turner <[email protected]> Cc: Max Filippov <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Michal Simek <[email protected]> Cc: Muchun Song <[email protected]> Cc: Oscar Salvador <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Pratyush Yadav <[email protected]> Cc: Richard Weinberger <[email protected]> Cc: "Ritesh Harjani (IBM)" <[email protected]> Cc: Russell King <[email protected]> Cc: Stafford Horne <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Thomas Bogendoerfer <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]>	2026-01-26 20:02:19 -08:00
Mike Rapoport (Microsoft)	4267739cab	arch, mm: consolidate initialization of SPARSE memory model ... Every architecture calls sparse_init() during setup_arch() although the data structures created by sparse_init() are not used until the initialization of the core MM. Beside the code duplication, calling sparse_init() from architecture specific code causes ordering differences of vmemmap and HVO initialization on different architectures. Move the call to sparse_init() from architecture specific code to free_area_init() to ensure that vmemmap and HVO initialization order is always the same. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport (Microsoft) <[email protected]> Cc: Alexander Gordeev <[email protected]> Cc: Alex Shi <[email protected]> Cc: Andreas Larsson <[email protected]> Cc: "Borislav Petkov (AMD)" <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: David S. Miller <[email protected]> Cc: Dinh Nguyen <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Guo Ren <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Helge Deller <[email protected]> Cc: Huacai Chen <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Johannes Berg <[email protected]> Cc: John Paul Adrian Glaubitz <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Klara Modin <[email protected]> Cc: Liam Howlett <[email protected]> Cc: Lorenzo Stoakes <[email protected]> Cc: Magnus Lindholm <[email protected]> Cc: Matt Turner <[email protected]> Cc: Max Filippov <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Michal Simek <[email protected]> Cc: Muchun Song <[email protected]> Cc: Oscar Salvador <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Pratyush Yadav <[email protected]> Cc: Richard Weinberger <[email protected]> Cc: "Ritesh Harjani (IBM)" <[email protected]> Cc: Russell King <[email protected]> Cc: Stafford Horne <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Thomas Bogendoerfer <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]>	2026-01-26 20:02:18 -08:00
Thomas Gleixner	99d2592023	rseq: Implement sys_rseq_slice_yield() ... Provide a new syscall which has the only purpose to yield the CPU after the kernel granted a time slice extension. sched_yield() is not suitable for that because it unconditionally schedules, but the end of the time slice extension is not required to schedule when the task was already preempted. This also allows to have a strict check for termination to catch user space invoking random syscalls including sched_yield() from a time slice extension region. Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Reviewed-by: Mathieu Desnoyers <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Link: https://patch.msgid.link/[email protected]	2026-01-22 11:11:17 +01:00
Randy Dunlap	24c776355f	kernel.h: drop hex.h and update all hex.h users ... Remove <linux/hex.h> from <linux/kernel.h> and update all users/callers of hex.h interfaces to directly #include <linux/hex.h> as part of the process of putting kernel.h on a diet. Removing hex.h from kernel.h means that 36K C source files don't have to pay the price of parsing hex.h for the roughly 120 C source files that need it. This change has been build-tested with allmodconfig on most ARCHes. Also, all users/callers of <linux/hex.h> in the entire source tree have been updated if needed (if not already #included). Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Randy Dunlap <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Yury Norov (NVIDIA) <[email protected]> Signed-off-by: Andrew Morton <[email protected]>	2026-01-20 19:44:19 -08:00
Keke Ming	e6eb9acc02	mips/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol() ... Replace deprecated kmap_atomic() with kmap_local_page(). Signed-off-by: Keke Ming <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Acked-by: Oleg Nesterov <[email protected]> Link: https://patch.msgid.link/[email protected]	2026-01-06 16:34:27 +01:00
Marc Zyngier	a1eaca410a	MIPS: Move IP30 timer to request_percpu_irq() ... Teach the SGI IP30 timer about request_percpu_irq(), which ultimately will allow for the removal of the antiquated setup_percpu_irq() API. Signed-off-by: Marc Zyngier <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Link: https://patch.msgid.link/[email protected]	2025-12-15 22:20:50 +01:00
Linus Torvalds	7a3984bbd6	Merge tag 'mips_6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux ... Pull MIPS updates from Thomas Bogendoerfer: "Just cleanups and fixes" * tag 'mips_6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: Fix whitespace damage in r4k_wait from VS timer fix mips: kvm: simplify kvm_mips_deliver_interrupts() MIPS: alchemy: mtx1: switch to static device properties mips: Remove __GFP_HIGHMEM masking MIPS: ftrace: Fix memory corruption when kernel is located beyond 32 bits MIPS: dts: Always descend vendor subdirectories mips: configs: loongson1: Update defconfig MIPS: Fix HOTPLUG_PARALLEL dependency	2025-12-10 06:20:22 +09:00
Linus Torvalds	415d34b92c	Merge tag 'namespace-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs ... Pull namespace updates from Christian Brauner: "This contains substantial namespace infrastructure changes including a new system call, active reference counting, and extensive header cleanups. The branch depends on the shared kbuild branch for -fms-extensions support. Features: - listns() system call Add a new listns() system call that allows userspace to iterate through namespaces in the system. This provides a programmatic interface to discover and inspect namespaces, addressing longstanding limitations: Currently, there is no direct way for userspace to enumerate namespaces. Applications must resort to scanning /proc/*/ns/ across all processes, which is: - Inefficient - requires iterating over all processes - Incomplete - misses namespaces not attached to any running process but kept alive by file descriptors, bind mounts, or parent references - Permission-heavy - requires access to /proc for many processes - No ordering or ownership information - No filtering per namespace type The listns() system call solves these problems: ssize_t listns(const struct ns_id_req *req, u64 *ns_ids, size_t nr_ns_ids, unsigned int flags); struct ns_id_req { __u32 size; __u32 spare; __u64 ns_id; struct /* listns */ { __u32 ns_type; __u32 spare2; __u64 user_ns_id; }; }; Features include: - Pagination support for large namespace sets - Filtering by namespace type (MNT_NS, NET_NS, USER_NS, etc.) - Filtering by owning user namespace - Permission checks respecting namespace isolation - Active Reference Counting Introduce an active reference count that tracks namespace visibility to userspace. A namespace is visible in the following cases: - The namespace is in use by a task - The namespace is persisted through a VFS object (namespace file descriptor or bind-mount) - The namespace is a hierarchical type and is the parent of child namespaces The active reference count does not regulate lifetime (that's still done by the normal reference count) - it only regulates visibility to namespace file handles and listns(). This prevents resurrection of namespaces that are pinned only for internal kernel reasons (e.g., user namespaces held by file->f_cred, lazy TLB references on idle CPUs, etc.) which should not be accessible via (1)-(3). - Unified Namespace Tree Introduce a unified tree structure for all namespaces with: - Fixed IDs assigned to initial namespaces - Lookup based solely on inode number - Maintained list of owned namespaces per user namespace - Simplified rbtree comparison helpers Cleanups - Header Reorganization: - Move namespace types into separate header (ns_common_types.h) - Decouple nstree from ns_common header - Move nstree types into separate header - Switch to new ns_tree_{node,root} structures with helper functions - Use guards for ns_tree_lock - Initial Namespace Reference Count Optimization - Make all reference counts on initial namespaces a nop to avoid pointless cacheline ping-pong for namespaces that can never go away - Drop custom reference count initialization for initial namespaces - Add NS_COMMON_INIT() macro and use it for all namespaces - pid: rely on common reference count behavior - Miscellaneous Cleanups - Rename exit_task_namespaces() to exit_nsproxy_namespaces() - Rename is_initial_namespace() and make argument const - Use boolean to indicate anonymous mount namespace - Simplify owner list iteration in nstree - nsfs: raise SB_I_NODEV, SB_I_NOEXEC, and DCACHE_DONTCACHE explicitly - nsfs: use inode_just_drop() - pidfs: raise DCACHE_DONTCACHE explicitly - pidfs: simplify PIDFD_GET__NAMESPACE ioctls - libfs: allow to specify s_d_flags - cgroup: add cgroup namespace to tree after owner is set - nsproxy: fix free_nsproxy() and simplify create_new_namespaces() Fixes: - setns(pidfd, ...) race condition Fix a subtle race when using pidfds with setns(). When the target task exits after prepare_nsset() but before commit_nsset(), the namespace's active reference count might have been dropped. If setns() then installs the namespaces, it would bump the active reference count from zero without taking the required reference on the owner namespace, leading to underflow when later decremented. The fix resurrects the ownership chain if necessary - if the caller succeeded in grabbing passive references, the setns() should succeed even if the target task exits or gets reaped. - Return EFAULT on put_user() error instead of success - Make sure references are dropped outside of RCU lock (some namespaces like mount namespace sleep when putting the last reference) - Don't skip active reference count initialization for network namespace - Add asserts for active refcount underflow - Add asserts for initial namespace reference counts (both passive and active) - ipc: enable is_ns_init_id() assertions - Fix kernel-doc comments for internal nstree functions - Selftests - 15 active reference count tests - 9 listns() functionality tests - 7 listns() permission tests - 12 inactive namespace resurrection tests - 3 threaded active reference count tests - commit_creds() active reference tests - Pagination and stress tests - EFAULT handling test - nsid tests fixes" * tag 'namespace-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (103 commits) pidfs: simplify PIDFD_GET_<type>_NAMESPACE ioctls nstree: fix kernel-doc comments for internal functions nsproxy: fix free_nsproxy() and simplify create_new_namespaces() selftests/namespaces: fix nsid tests ns: drop custom reference count initialization for initial namespaces pid: rely on common reference count behavior ns: add asserts for initial namespace active reference counts ns: add asserts for initial namespace reference counts ns: make all reference counts on initial namespace a nop ipc: enable is_ns_init_id() assertions fs: use boolean to indicate anonymous mount namespace ns: rename is_initial_namespace() ns: make is_initial_namespace() argument const nstree: use guards for ns_tree_lock nstree: simplify owner list iteration nstree: switch to new structures nstree: add helper to operate on struct ns_tree_{node,root} nstree: move nstree types into separate header nstree: decouple from ns_common header ns: move namespace types into separate header ...	2025-12-01 09:47:41 -08:00
Maciej W. Rozycki	2b6d718c8d	MIPS: Fix whitespace damage in r4k_wait from VS timer fix ... Remove stray spaces/tabs introduced with commit 56651128e2 ("MIPS: Fix idle VS timer enqueue") and add missing indentation for a branch delay slot. Signed-off-by: Maciej W. Rozycki <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>	2025-12-01 10:34:34 +01:00